When Dr. Conrad Murray found Michael Jackson unconscious, he called the late singer's former personal assistant, Michael Amir Williams, and left a frantic message. Said message was played today in court.

According to Digital Spy, Murray said, "Call me right away, please. Please call me right away. Thank you." Williams said that Murray told him that the King of Pop suffered a "bad reaction" and that Williams' presence was requested immediately. Murray told him to "get here right away."

Despite the urgency with which the doctor seemed to speak, Williams said Murray instructed him not to call 911. He also did not elaborate on the singer's condition, either.

Jackson had been preparing for his This Is It tour when he died on June 25, 2009. A lawyer for AEG, the tour's organizers, said Murray had requested a CPR machine and an additional nurse in London for his patient. "He wanted to make sure that there was somebody else available to be of assistance," AEG's lawyer, Kathie Jorrie, said. Murray said Jackson needed the CPR machine for health reasons.

AEG's Paul Gongaware said that it was Jackson's decision to hire Murray as his personal doctor for the duration of the planned London residency. He categorized the relationship between doctor and patient as "friendly and caring."